:root{--bg:#FBF8F3;--surface:#FFFFFF;--text:#1F1B16;--muted:#6B6259;--primary:#B4432C;--accent:#2F6F62;--radius:24px;--width:1180px;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.72;letter-spacing:0}a{color:inherit;text-decoration:none}a:hover{color:var(--primary)}.s-569b183f4185-shell{width:min(calc(100% - 40px),var(--width));margin-inline:auto}.s-569b183f4185-site-header{position:relative;z-index:20;border-bottom:1px solid color-mix(in srgb,var(--text) 13%,transparent);background:color-mix(in srgb,var(--bg) 92%,transparent)}.brand{display:inline-flex;align-items:center;gap:12px;font-weight:800;font-size:1.05rem;white-space:nowrap}.brand-mark{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:var(--surface);font-size:.8rem}.site-nav{margin-left:auto;display:flex;align-items:center;gap:22px;flex-wrap:wrap}.site-nav a{font-size:.92rem;color:var(--muted)}.s-569b183f4185-breadcrumbs{margin-bottom:24px;color:var(--muted);font-size:.9rem}.prose{padding-bottom:90px}.prose h2{margin:58px 0 16px;font-size:clamp(1.55rem,3vw,2.45rem);line-height:1.2}.prose p{max-width:820px;color:var(--muted);font-size:1.04rem}.s-569b183f4185-site-footer{padding:64px 0 30px;border-top:1px solid color-mix(in srgb,var(--text) 13%,transparent);background:var(--surface)}.s-569b183f4185-footer-links{display:grid;gap:8px}.s-569b183f4185-footer-bottom{margin-top:46px;padding-top:20px;border-top:1px solid color-mix(in srgb,var(--text) 11%,transparent);color:var(--muted);font-size:.88rem}.media-frame{margin:0;overflow:hidden;border:1px solid color-mix(in srgb,var(--text) 13%,transparent);border-radius:var(--radius);background:var(--surface);aspect-ratio:16/10}.media-frame img{display:block;width:100%;height:100%;object-fit:cover}.article-media{margin:0 0 34px;aspect-ratio:16/9}@media(max-width:900px){.site-nav{margin-left:0;gap:16px}}@media(max-width:600px){.s-569b183f4185-shell{width:min(calc(100% - 28px),var(--width))}.site-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:100%;gap:8px}.site-nav a{padding:8px 0}}.brand-mark{position:relative;flex:0 0 auto;overflow:hidden}.brand-mark i{display:block;width:13px;height:13px;border:3px solid currentColor;border-radius:50%}.brand-mark i:after{content:"";position:absolute;width:8px;height:3px;background:currentColor;transform:rotate(-38deg);right:6px;bottom:8px;border-radius:4px}.brand-name{line-height:1.15}.s-569b183f4185-site-header .s-569b183f4185-shell{min-height:72px}@media(max-width:900px){.s-569b183f4185-site-header .s-569b183f4185-shell{padding-block:14px}}body.s-569b183f4185-profile-font-neo-serif{font-family:"Iowan Old Style","Noto Serif SC","Songti SC",Georgia,serif}body.s-569b183f4185-profile-font-neo-serif h1,body.s-569b183f4185-profile-font-neo-serif h2,body.s-569b183f4185-profile-font-neo-serif h3{font-family:inherit;letter-spacing:-.02em}.s-569b183f4185-profile-type-display h1{font-size:clamp(3.4rem,8vw,7.5rem);line-height:.92}.s-569b183f4185-profile-type-display h2{font-size:clamp(2.2rem,4.8vw,4.2rem)}.s-569b183f4185-profile-spacing-airy{--profile-gap:26px;--section-pad:clamp(86px,11vw,150px)}.s-569b183f4185-profile-shape-pill .media-frame{border-radius:24px}.s-569b183f4185-brand-mark-logo-spark i{width:17px;height:17px;border:0;background:currentColor;clip-path:polygon(50% 0,62% 37%,100% 50%,62% 63%,50% 100%,38% 63%,0 50%,38% 37%)}.s-569b183f4185-brand-mark-logo-spark i:after{display:none}.s-569b183f4185-brand-mark-logo-spark{border-radius:8px;clip-path:polygon(50% 0,62% 20%,86% 14%,80% 40%,100% 50%,80% 60%,86% 86%,62% 80%,50% 100%,38% 80%,14% 86%,20% 60%,0 50%,20% 40%,14% 14%,38% 20%)}.s-569b183f4185-profile-animation-none *{animation:none!important}.s-569b183f4185-profile-animation-none{scroll-behavior:auto}@keyframes profile-fade-up{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}@keyframes profile-slide-soft{from{opacity:0;transform:translateX(-18px)}to{opacity:1;transform:none}}@keyframes profile-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}.s-569b183f4185-footer-profile-compact .s-569b183f4185-footer-profile-grid{display:flex;align-items:center;justify-content:space-between;gap:24px}.s-569b183f4185-footer-profile-compact .s-569b183f4185-footer-profile-about{display:none}@media(max-width:900px){.s-569b183f4185-footer-profile-compact .s-569b183f4185-footer-profile-grid{display:grid;grid-template-columns:1fr}.s-569b183f4185-footer-profile-compact .s-569b183f4185-footer-profile-about{display:block}}.s-569b183f4185-directory-header{display:grid;grid-template-columns:minmax(180px,.6fr) minmax(0,1.4fr);gap:40px;align-items:center;padding-block:24px}.s-569b183f4185-directory-header nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px 20px;margin:0}.s-569b183f4185-article-journal{max-width:860px;padding-block:clamp(40px,7vw,90px)}.s-569b183f4185-journal-title{border-bottom:2px solid var(--primary);padding-bottom:26px;margin-bottom:32px}.s-569b183f4185-journal-title h1{font-size:clamp(2rem,5vw,4.2rem);line-height:1.15}.s-569b183f4185-journal-related{border-top:1px solid var(--primary);margin-top:36px;padding-top:24px;display:grid;gap:12px}.s-569b183f4185-directory-header nav a{min-height:44px;display:flex;align-items:center}.s-569b183f4185-directory-header>*{min-width:0}@media(max-width:760px){.s-569b183f4185-directory-header{grid-template-columns:minmax(0,1fr)}.s-569b183f4185-directory-header nav{grid-template-columns:repeat(2,minmax(0,1fr))}}.prose,.site-nav{min-width:0}.prose{overflow-wrap:anywhere}.table-scroll{max-width:100%;overflow-x:auto;margin:20px 0}.table-scroll table{width:100%;border-collapse:collapse;font-size:.94em}.table-scroll th,.table-scroll td{text-align:start;padding:12px;border:1px solid var(--muted);vertical-align:top}.prose pre{max-width:100%;overflow:auto;padding:16px;background:var(--surface);border:1px solid var(--muted);border-radius:var(--radius);white-space:pre}.s-569b183f4185-block-callout,.s-569b183f4185-block-example{padding:18px;border-inline-start:3px solid var(--primary);background:var(--surface)}.article-answer{padding:16px;border:1px solid var(--primary);border-radius:var(--radius)}@media(max-width:600px){body{font-size:16px}.site-nav a{min-height:44px;display:inline-flex;align-items:center}.table-scroll th,.table-scroll td{padding:10px}.prose{line-height:1.85}.content-block{margin-block:28px}}@media(max-width:600px){.table-scroll table{min-width:520px}.table-scroll th:first-child{min-width:5em}}